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Advanced Settings
71
N450 WiFi Cable Modem Router Model N450/CG3000Dv2
A login screen displays.
2.
Enter the modem router user name and password.
The default user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
The modem router main menu displays.
3.
In the main menu, under Advanced, select
LAN Switch
.
The following screen displays:
4.
For each port, select the appropriate speed and duplex setting.
5.
Click the
Apply
button.
Your changes are saved.
To disable a LAN port:
1.
Type
in the address field of your web browser.
A login screen displays.
Page 72 / 88
Advanced Settings
72
N450 WiFi Cable Modem Router Model N450/CG3000Dv2
2.
Enter the modem router user name and password.
The default user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
The modem router main menu displays.
3.
In the main menu, under Advanced, select
LAN Switch
.
4.
In the Auto column corresponding to the port you want to disable, clear the check box.
5.
Click the
Apply
button.
Configure Universal Plug and Play
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers,
access the network and connect to other devices as needed. UPnP devices can
automatically discover the services from other registered UPnP devices on the network. With
UPnP, you can specify the following:
•
Advertisement period
. Specifies how often the modem router broadcasts its UPnP
information. The default is 30 minutes. Lower numbers ensure that control points
have current device status at the expense of more network traffic. Larger numbers
compromise the freshness of the device status but can significantly reduce network
traffic.
•
Advertisement time to live
. The time to live for the advertisement, measured in hops
(steps) for each UPnP packet that is sent. Hops are the steps a packet takes between
routers. The number of hops can range from 1 to 255. The default value for the
advertisement time to live is four hops, which should be fine for most home networks.
If you notice that some devices are not being updated or reached correctly, you might
need to increase this value slightly.
To configure UPnP:
1.
Type
in the address field of your web browser.
A login screen displays.
2.
Enter the modem router user name and password.
The default user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
Page 73 / 88
Advanced Settings
73
N450 WiFi Cable Modem Router Model N450/CG3000Dv2
The modem router main menu displays.
3.
In the main menu, under Advanced, select
UPnP
.
4.
Select the
Turn UPnP On
check box.
By default, this check box is cleared. This prevents the modem router from allowing any
devices to automatically control the resources, such as port forwarding, of the modem
router.
5.
Complete the
Advertisement Period (in minutes)
and
Advertisement Time to Live (in
hops)
fields.
The UPnP Portmap Table displays the IP address of each UPnP device that is accessing
the modem router and which internal and external ports of the modem router that device
opened. The UPnP Portmap Table also displays the protocol for the port that was opened
and if that port is still active for each IP address.
6.
To save your changes, click the
Apply
button.
7.
To disregard any unsaved changes, click the
Cancel
button.
8.
To update the UPnP Portmap Table and to show the active ports that are currently opened
by UPnP devices, click the
Refresh
button to.
Set Networking Protocols
Network Time Protocol (NTP) is a networking protocol that synchronizes clocks between
computer systems over packet-switched, variable-latency data networks.
To enable NTP:
1.
Type
in the address field of your web browser.
Page 74 / 88
Advanced Settings
74
N450 WiFi Cable Modem Router Model N450/CG3000Dv2
A login screen displays.
2.
Enter the modem router user name and password.
The default user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
The modem router main menu displays.
3.
In the main menu, under Advanced, select
NTP
.
The following screen displays:
4.
Select the
NTP enable
check box.
5.
Enter the IP server addresses:
a.
Enter the first server IP address in the
Server IP Address 1
field.
b.
Enter the second server IP address in the
Server IP Address 2
field.
c.
Enter the third server IP address in the
Server IP Address 3
field.
6.
Click the
Apply
button.
Your changes are saved.
Enable Network Address Translation
Network Address Translation (NAT) provides one-to-many translation of IP addresses
between devices. This means that your network presents only one IP address to the Internet,
and outside users cannot directly address any of your local computers. Enable NAT to allow
multiple computers on your network to access the Internet using a single public IP address.
NAT is enabled by default.
Page 75 / 88
Advanced Settings
75
N450 WiFi Cable Modem Router Model N450/CG3000Dv2
To disable NAT:
1.
Type
in the address field of your web browser.
A login screen displays.
2.
Enter the modem router user name and password.
The default user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
The modem router main menu displays.
3.
In the main menu, under Advanced, select
NAT
.
The following screen displays:
4.
Clear the
Turn NAT On
check box.
5.
Click the
Apply
button.
Access a USB Device on the Network
You can access a USB device connected to the modem router USB port.
To access a USB device from a Windows computer:
6.
Insert a USB drive into the USB port on the front or back of the modem router.
7.
If your USB drive has a power supply, you must use it when you connect the USB drive to
the modem router.
When you connect the USB drive to the modem router USB port, it might take up to two
minutes before it is ready for sharing. By default, the USB drive is available to all
computers on your local area network (LAN).
8.
Click the
Start
button on your computer’s desktop.

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